this is great; on midgaard, you can get the iron ingots for about 36k ( or skill up from 18-20 making them yourself for around the same price ) fire crystals for about 7k to make them into sheets which will skill you up to 22, then use a wind crystal for about 4k which can skill you up to make scales to skill up to 26, then take your scales, throw another wind in there for these, and boom you make a profit, as well as skill ups.
so that's rouhgly 36k +7k +4k +4k = 53k makibish go for about 16k a stack, so, 16x4 = 64 a tidy profit, and skill ups.
*(of course, this isn't accounting for breaks, but I didn't really experience very many) -- happy crafting!